curl --request POST \
  --url https://commet.co/api/v1/customers/{id}/credits \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "amount": 123,
  "reason": "<string>"
}
'

import { Commet } from "@commet/node";

const commet = new Commet({ apiKey: "ck_xxx" });

const customerCredit = await commet.customers.createCredit({
  id: "cus_xxx",
  amount: 5000,
  currency: "usd",
  reason: "Customer requested",
});

from commet import Commet

commet = Commet("ck_xxx")

customer_credit = commet.customers.create_credit(
    "cus_xxx",
    amount=5000,
    currency="usd",
    reason="Customer requested",
)

client, err := commet.New("ck_xxx")
if err != nil {
	log.Fatal(err)
}
ctx := context.Background()

customerCredit, err := client.Customers.CreateCredit(ctx, "cus_xxx", &commet.CreateCustomerCreditParams{
	Amount: 5000,
	Currency: "usd",
	Reason: "Customer requested",
})
if err != nil {
	log.Fatal(err)
}

import co.commet.Commet;
import co.commet.params.CreateCustomerCreditParams;

var commet = Commet.builder().apiKey("ck_xxx").build();

var customerCredit = commet.customers().createCredit(
    "cus_xxx",
    CreateCustomerCreditParams.builder(5000L, "usd", "Customer requested").build()
);

use Commet\Commet;

$commet = new Commet('ck_xxx');

$customerCredit = $commet->customers->createCredit(
    id: 'cus_xxx',
    amount: 5000,
    currency: 'usd',
    reason: 'Customer requested',
);

{
  "id": "cc_1a2b3c4d",
  "amount": 500,
  "appliedAmount": 0,
  "reversedAmount": 0,
  "revokedAmount": 0,
  "remainingAmount": 500,
  "currency": "usd",
  "reason": "Service credit",
  "source": "api",
  "expiresAt": null,
  "createdAt": "2026-09-07T12:00:00.000Z",
  "object": "customer_credit",
  "livemode": false
}

{
  "error": {
    "type": "validation_error",
    "code": "validation_error",
    "message": "The request contains an invalid parameter.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/validation_error.md"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "unauthorized",
    "message": "A valid API key is required.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/unauthorized.md"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "forbidden",
    "message": "You do not have permission to perform this operation.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/forbidden.md"
  }
}

{
  "error": {
    "type": "not_found_error",
    "code": "not_found",
    "message": "The requested resource was not found.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/not_found.md"
  }
}

{
  "error": {
    "type": "conflict_error",
    "code": "idempotency_in_progress",
    "message": "A request with this idempotency key is still being processed.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/idempotency_in_progress.md"
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limited",
    "message": "Too many requests. Retry after the interval specified in the Retry-After header.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/rate_limited.md"
  }
}

{
  "error": {
    "type": "internal_error",
    "code": "internal_error",
    "message": "An unexpected error occurred while processing the request.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/internal_error.md"
  }
}

{
  "error": {
    "type": "internal_error",
    "code": "idempotency_unavailable",
    "message": "Idempotency storage is temporarily unavailable. Retry with the same idempotency key.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/idempotency_unavailable.md"
  }
}